Barton's fx unsp radius, subs for opn fx type I/2 w nonunion

This code signifies a Barton's fracture, which is an intra-articular fracture of the distal radius with dorsal or volar displacement of the carpal bones. The "unspecified radius" indicates that the laterality (left or right) of the fracture was not documented. The "subsequent encounter" specifies that the patient is receiving routine care during the healing phase of an open fracture, specifically types I or II, and is experiencing a nonunion, meaning the bone is failing to heal properly.

Apply this code when a patient presents for follow-up care of an open Barton's fracture (Gustilo-Anderson type I or II) of an unspecified radius that has not healed as expected. This would be used for ongoing management of the nonunion, such as casting changes, physical therapy, or preparation for revision surgery.

• Ensure documentation clearly states "subsequent encounter" and "nonunion" for an open fracture.
• Verify the fracture type is specifically Barton's and that the laterality of the radius is not specified.
• Always sequence this code as a secondary diagnosis if the nonunion is being treated with a procedure, with the primary code reflecting the procedure performed.